CN207108666U - A kind of coal-fired power station boiler flue gas desulfurization processing system - Google Patents
A kind of coal-fired power station boiler flue gas desulfurization processing system Download PDFInfo
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- CN207108666U CN207108666U CN201720779781.8U CN201720779781U CN207108666U CN 207108666 U CN207108666 U CN 207108666U CN 201720779781 U CN201720779781 U CN 201720779781U CN 207108666 U CN207108666 U CN 207108666U
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Abstract
A kind of coal-fired power station boiler flue gas desulfurization processing system, including boiler, air preheater, electric cleaner, desulfurizing tower, dewatering system, neutralization pond, flocculation basin, depositing reservoir and the sludge-dewatering dryer being sequentially connected by pipeline, the outlet flue of boiler is connected with the air inlet of air preheater, the gas outlet of air preheater is connected with the air inlet of electric cleaner, and the gas outlet of electric cleaner is connected with the air inlet of desulfurizing tower.Waste water then spurts into front flue of dust collector through air compressor machine using atomizer, desulfurization wastewater after atomization is to be engraved in the flue of high temperature to evaporate, in waste water impurity is in the form of solid matter and flying dust enters cleaner with flue gas together, by deduster, particulate matter is captured with grey outer row.Most impurity dirt is all precipitated in depositing reservoir, and dust stratification, fouling, blocking and etching problem just will not be produced in flue, has not only been saved cost but also has been reached the purpose of wastewater zero discharge.
Description
Technical field：
It the utility model is related to a kind of coal-fired power station boiler flue gas desulfurization processing system.
Background technology：
With the construction and the improvement of people's living standards in city, the consumption of the energy is continuously increased.In China's energy resource structure
In, coal is constantly in critical role, and China is the energy big country using coal as raw material, especially in coal fired power plant field, due to big
The burning coal of amount, cause to be discharged into the sulfur dioxide in air and increase sharply.Sulfur dioxide is to cause the rings such as greenhouse effects, acid rain
One of major pollutants of border pollution problem, it drastically influence the living environment of the mankind.
With the raising that China environmental protection is realized, coal-fired power station boiler has added flue gas desulfurization device.Conventional cigarette
Desulfurization method has lime stone --- gypsum wet flue gas desulfurizing and flue evaporation desulfurization；Wherein, lime stone --- gypsum wet
Flue gas desulfurization technique is most widely used, and accounts for 90% or so of desulfurization installed capacity.Wet desulphurization waste water is mainly characterized by weak
Acidity, pH value are less than 6.0；Suspension content is high, but particle is tiny, Main Ingredients and Appearance be dust and desulfurization product (CaSO4 and
CaSO3)；Contain soluble chloride and fluoride, nitrate etc.；The also heavy metal atom such as Hg, Pb, Ni, Cr.
And flue evaporation technology is to steam desulfurization wastewater in flue after nozzle atomization with front flue of dust collector is pumped into
Send out, insoluble matter is trapped by deduster together with flying dust with salt and reaches the purpose of not effluent in waste water.But because waste water suspends
Thing is high, and the product such as dust and heavy metal for being separated out after evaporation is more, it is easy to causes flue and upstream device dust stratification, fouling, blocks up
Plug and etching problem, while add the maintenance cost of flue.
Utility model content：
The utility model is in order to make up the deficiencies in the prior art, there is provided a kind of coal-fired power station boiler flue gas desulfurization processing system
System, it is reasonable in design, most suspended substances and heavy metal are intercepted outside flue in advance, with the synchronous work of flue waste water evaporation
Make, both reached the purpose of wastewater zero discharge, and turn avoid dust stratification, fouling, blocking and the etching problem of flue, efficiently solve
Problems of the prior art.
The utility model is that technical scheme is used by solving above-mentioned technical problem：
A kind of coal-fired power station boiler flue gas desulfurization processing system, including boiler, air preheater, the electricity being sequentially connected by pipeline
Deduster, desulfurizing tower, dewatering system, neutralization pond, flocculation basin, depositing reservoir and sludge-dewatering dryer, the outlet flue of boiler with
The air inlet of air preheater is connected, and the gas outlet of air preheater is connected with the air inlet of electric cleaner, and the gas outlet of electric cleaner is with taking off
The air inlet of sulphur tower is connected, and the liquid outlet of desulfurizing tower is connected with the inlet of dewatering system, the liquid outlet of dewatering system and neutralization
The inlet in pond is connected, and the liquid outlet of neutralization pond is connected with the inlet of flocculation basin, the liquid outlet of flocculation basin and entering for depositing reservoir
Liquid mouth is connected, and the liquid outlet of depositing reservoir is connected with the inlet of sludge-dewatering dryer, the outlet flue of desulfurizing tower and chimney
Smoke inlet is connected.
The pipeline that desulfurization wastewater in depositing reservoir is injected between air preheater and electric cleaner through air compressor machine.
The liquid added in neutralization pond in alkaline agent regulation neutralization pond is to alkalescence.
The alkaline agent is the mixed solution of one or both of milk of lime or sodium hydroxide solution.
The pH value of liquid in the neutralization pond is 9.0-9.5.
The solid outlet end of dewatering system is connected with a gypsum collection device.
The beneficial effects of the utility model：It is reasonable in design, most impurity and again in the desulfurization wastewater after processing
Metal insoluble matter precipitates in depositing reservoir, dries and disposes through sludge dewatering.Waste water is then sprayed through air compressor machine using atomizer
Enter front flue of dust collector, the desulfurization wastewater after atomization is to be engraved in the flue of high temperature to evaporate, and the impurity in waste water is with solid matter
Form and flying dust enter cleaner with flue gas together, by deduster, particulate matter is captured to be arranged with grey outer.Greatly
Partial impurity dirt is all precipitated in depositing reservoir, and dust stratification, fouling, blocking and corrosion just will not be produced in flue and is asked
Topic, had not only saved cost but also had reached the purpose of wastewater zero discharge.
Brief description of the drawings：
Fig. 1 is principle schematic of the present utility model.
Embodiment：
The characteristics of for explanation this programme can be understood, the utility model is made below by embodiment and with reference to accompanying drawing
Further illustrate.
As shown in Figure 1：A kind of coal-fired power station boiler flue gas desulfurization processing system, including the pot being sequentially connected by pipeline
Stove, air preheater, electric cleaner, desulfurizing tower, dewatering system, neutralization pond, flocculation basin, depositing reservoir and sludge-dewatering dryer, pot
The outlet flue of stove is connected with the air inlet of air preheater, and the gas outlet of air preheater is connected with the air inlet of electric cleaner, electric cleaner
Gas outlet be connected with the air inlet of desulfurizing tower, the liquid outlet of desulfurizing tower is connected with the inlet of dewatering system, dewatering system
Liquid outlet is connected with the inlet of neutralization pond, and the liquid outlet of neutralization pond is connected with the inlet of flocculation basin, the liquid outlet of flocculation basin
It is connected with the inlet of depositing reservoir, the liquid outlet of depositing reservoir is connected with the inlet of sludge-dewatering dryer, and desulfurizing tower goes out
Mouth is connected with the smoke inlet of chimney.
The pipeline that desulfurization wastewater in depositing reservoir is injected between air preheater and electric cleaner through air compressor machine.
The liquid added in neutralization pond in alkaline agent regulation neutralization pond is to alkalescence.
The alkaline agent is the mixed solution of one or both of milk of lime or sodium hydroxide solution.
The pH value of liquid in the neutralization pond is 9.0-9.5.
The solid outlet end of dewatering system is connected with a gypsum collection device.
Desulfurization wastewater in boiler, which enters in air preheater, to be heated, and is heated and entered using the flue gas heat of boiler back end ductwork
Air in boiler, so as to reduce flue gas loss, EAT is improved, improve the efficiency of boiler；The neutralisation treatment stage to
Milk of lime, sodium hydroxide or other alkaline agents are added in waste water and adjust waste water to alkalescence, pH value is typically adjusted to 9.0-9.5, makes
Most heavy metal ion such as Cu2+, Ni2+, Cr3+ are separated with hydroxide precipitation form from waste water.Flocculated again by putting into
Agent, the flue after clarified precipitation by desulfurization wastewater after waste water is pumped to air preheater.It is de- after above-mentioned steps are handled
Most impurity and heavy metal insoluble matter precipitates in depositing reservoir in sulphur waste water, dries and disposes through sludge dewatering.Waste water is then
Front flue of dust collector is spurted into using atomizer through air compressor machine, the desulfurization wastewater after atomization is to be engraved in the flue of high temperature to steam
Hair, in waste water impurity is in the form of solid matter and flying dust enters cleaner with flue gas together, by deduster, particulate matter
It is captured with grey outer row.In summary, most impurity dirt all precipitates in depositing reservoir, in flue
Just dust stratification, fouling, blocking and etching problem will not be produced, cost has not only been saved but also has reached the purpose of wastewater zero discharge.
Above-mentioned embodiment cannot function as the limitation to scope of protection of the utility model, for the skill of the art
For art personnel, any alternate modification or conversion made to the utility model embodiment all fall within guarantor of the present utility model
In the range of shield.
Part is not described in detail for the utility model, is the known technology of those skilled in the art of the present technique.
Claims (6)
- A kind of 1. coal-fired power station boiler flue gas desulfurization processing system, it is characterised in that：Including be sequentially connected by pipeline boiler, Air preheater, electric cleaner, desulfurizing tower, dewatering system, neutralization pond, flocculation basin, depositing reservoir and sludge-dewatering dryer, boiler Outlet flue is connected with the air inlet of air preheater, and the gas outlet of air preheater is connected with the air inlet of electric cleaner, and electric cleaner goes out Gas port is connected with the air inlet of desulfurizing tower, and the liquid outlet of desulfurizing tower is connected with the inlet of dewatering system, and dewatering system goes out liquid Mouthful be connected with the inlet of neutralization pond, the liquid outlet of neutralization pond is connected with the inlet of flocculation basin, the liquid outlet of flocculation basin with it is clear The inlet in clear pond is connected, and the liquid outlet of depositing reservoir is connected with the inlet of sludge-dewatering dryer, the outlet flue of desulfurizing tower It is connected with the smoke inlet of chimney.
- A kind of 2. coal-fired power station boiler flue gas desulfurization processing system according to claim 1, it is characterised in that：In depositing reservoir The pipeline injected through air compressor machine between air preheater and electric cleaner of desulfurization wastewater.
- A kind of 3. coal-fired power station boiler flue gas desulfurization processing system according to claim 1, it is characterised in that：In neutralization pond The middle liquid added in alkaline agent regulation neutralization pond is to alkalescence.
- A kind of 4. coal-fired power station boiler flue gas desulfurization processing system according to claim 3, it is characterised in that：The alkalescence Agent is the mixed solution of one or both of milk of lime or sodium hydroxide solution.
- A kind of 5. coal-fired power station boiler flue gas desulfurization processing system according to claim 3 or 4, it is characterised in that：It is described The pH value of liquid in neutralization pond is 9.0-9.5.
- A kind of 6. coal-fired power station boiler flue gas desulfurization processing system according to claim 1, it is characterised in that：Dewatering system Solid outlet end be connected with a gypsum collection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720779781.8U CN207108666U (en) | 2017-06-29 | 2017-06-29 | A kind of coal-fired power station boiler flue gas desulfurization processing system |
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| CN201720779781.8U CN207108666U (en) | 2017-06-29 | 2017-06-29 | A kind of coal-fired power station boiler flue gas desulfurization processing system |
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| CN207108666U true CN207108666U (en) | 2018-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960895A (en) * | 2021-02-26 | 2021-06-15 | 大唐环境产业集团股份有限公司 | Coal-fired power plant sludge drying system utilizing coal ash |
| CN115583682A (en) * | 2022-10-21 | 2023-01-10 | 济宁华源热电有限公司 | Desulfurization wastewater treatment system and desulfurization wastewater treatment method |
-
2017
- 2017-06-29 CN CN201720779781.8U patent/CN207108666U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960895A (en) * | 2021-02-26 | 2021-06-15 | 大唐环境产业集团股份有限公司 | Coal-fired power plant sludge drying system utilizing coal ash |
| CN115583682A (en) * | 2022-10-21 | 2023-01-10 | 济宁华源热电有限公司 | Desulfurization wastewater treatment system and desulfurization wastewater treatment method |
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